Honing machine



F. P. HEGEMAN HONING MACHINE Aug. 16, 1949;

Filed June 11, 1948 ms A TTOEJVE Y.

Patented Aug. 16, 1949 UNITED STA-r HONING MACHINE Franklyn P. Hegeman,UnionQN. J., assignor to corporation of Delaware General MotorsCorporation, Detroit, Mich., a

'Application June ll, 1948, Serial No. 32.320

16 Claims.

' This invention relates to honingmachines and 4' is illustrated by wayof example as constructed for honing the peripheral surfaces of conicalrollers. An object of the invention is to provide an improved honingmachine for finishing the peripheral surfaces of round work pieces.Another-object is to provide improved apparatus for controlling theintroduction and removal of work pieces to and from their honingpositions. Another object is to provide an improved mounting for a hone,as to enable it to tilt and conform to the work surface as itreciprocates. To these ends and also to improve generally upon machinesof this character, the invention consists in the various mattershereinafter de-. scribed and claimed. In the drawings Fig. 1 is a planview with certain honing mechanism removed and with a support insection.

Fig. 2 is chiefly a front view of Fig. 1, the hone carrierand associatedparts being added.

I Fig. 3 is a perspective view; Figs. 4 and 5 are perspective views withdifferent parts removed or displaced to reveal other parts.

Fig. 6 is a front view in section.

Fig. 7 is an exploded View of the hone holder andits carrier inperspective. Fig. 8 is a vertical section of Fig. 9 one of the carriercheeks being removed and Fig. 9 is a hori zonta'l section of Fig. 8. r eReferring first to important elements and functions, work pieces W,herein shown as tapered rollers, are supplied, largeand foremost,by anysuitable feeding mechanism to a hollow loading block 2 from which theyare-intermittently released onto a hardened work rest 4 for a honingoperation by a reciprocating hone ID. The work is rotated by engagementwith a pair of driven rolls 6 and 8 and is released after honing by anejector blade l2 which normally lies between the driven rolls but isadvanced simultaneously with the retraction of the hone. An escapementmechanism releases a new roller onto the ejector blade and, uponretraction of the blade accompanied by advance of the hone, the newroller is dropped from the blade onto the work rest. The driven rolls 6and 8 are each secured by a washer land a bolt IE to a vertical spindlel3 suitably journalled in a quill 20 on a support 22. The rolls aredriven in the same direction about their axes as by mechanism disclosedin patent to Hutchinson 2,433,455 except that it is preferred that thespindles be parallel instead of skewed. A ring 24 on the quill 20 has aflange projecting into a circular groove of each driven roll to ex-.clude grit. j The loading end'of a slotted plate 26 adjustably-securedby screws ztto-aclamping. plate .30 oath: that:

of the loading block party block 2 is welded or brazed to the r 2 I I ofthe support 22. Each side of the loading block has a pair of verticallyperforated lugs 34 each holding/the upper end of a spring wire 36 whichprojects downwardly beyond the lower end of theloading block. The wiresare guided in slits 38 at opposite sides of the loading block and theirlower ends are closer together than the diameter of the work. It will benoted that the lugs and wires are offset from the center of the loadingblock. Hence the wires will act to urge the work piece into contact withthe driven rolls but they can be spread apart to release a finishedroller when the blade I2 is advanced.

The loading block has an opening 40 through which a lug 42 on a lever 44is normally projected to support the column of rollers. The lever 44 ispivoted at 46 in a fork at the end of anarm 48 fixed on the bottom ofthe plate 26. The lever and lug, are urged to holding position by a coilspring 50 attached to an upright lug 52 on the lever and to the plate26. An adjusting screw 54 one short upright lug of the lever wil1 engagethe loading block to limit the entry of the lug 42 through the opening40. The upper portion of the lug 52 lies in the path of a screw 56adjustably secured to an offset arm 58 on an upright bar 60 which issecured by plates 62 to a slide 64. The'lower end. of the bar 60 passesthrough the slotted plate 26 and is slotted to receive the ejectingblade l2. The slide 64 is shiftable along a fixed slideway 66 by meansof a piston and cylinder unit 68. The slide carries the honing tool andappurtenances.

The hone ID has its forward end curved to fit the work and it is clampedby a headed screw 10 in a split block or hone holder 12. The holder fitsfreely between forwardly projecting cheeks on a carrier 14, the cheekshaving V-shaped recesses 16 in which bear the sharp edges of lugs '18projecting from the hone holder. The sides of each recess 16 make alarger angle than the sides of each lug 18 so that the hone holder iscapable of rocking movement to a limited extent. The lugs and recessesare kept seated by means of a projection on the hone holder connected bya coil spring 82 to a cross pin 84 on the carrier. The carrier is boredout to receive the spring and the projection. One of the checks ofthe'carrier has a slot 85 of greater width than the head of the clampingscrew ll'lto allow rocking of the hone holder.

The carrier 14 is brazed to the lower end of a sleeve as which isadjustably secured by set screws to the lower end of a reciprocating rodpassing through a guide bearing 92 on the slide 64 andreciprocated.through a short stroke by any suitable crank mechanism .94 mounted onthe slide. Thus the honing mechanism is shiftable towards the worksimultaneously with the retreat 9f the. b a e za ay t omthe, w handis shft:

able away from the work as the blade advances towards the work. The Workrest 4 is formed on the t0.p:offan upright blade carriedby a slottedbase 96 which'is adjustably securedt'o thesup port 22. In theillustrated construction the work W consists of tapered rollers and thedriverr rollers 6 and 8 are conical to support thefiworks with its axisin a vertical position. The rod 90 reciprocates at a slightangle-toithevvertical tcarry the hone lengthwise alongthework:Theapparatus is adaptable to hone cylindrical work in which case thedriven rolls are cylindricaliandi the hone is reciprocated parallel tothe roll axes..

In operation, with aroller on the work'rest, the hone is reciprocatedfor a timed interval wheteupomthelslide filllisar-etract'ed.Asa-theshone moves away; from". the: work; the; blade I 2-: pushesthework: offi'the; rest, the workzspreadingstheiwire; springs 36;, As,this: occurs. the; screw 565 errgagessth'e; lug- 52" amt withdraws thedog 42 from" thedoading: block thereby releasing :theanextrrollerwhichtldrops :upon therblade l 2 temporarily: The slide 64then: advances; fi'rsta allowing: the coil spring: 50: to project: thelug 423 into" the loading black to'clamp:thezcolummofiwork pieces.Further: advance-softh'eislide causes=theb1ade1 [Z ta ride-.out-from:beneath the-piece anddropzit upon' the work rest, the wirespringsinsurings contact of? the". work: with. the driven rolls: as: thehone makes-: contact: with the: work; The: rockable U mounting of; thehone causes it' to-seat itselfand' conformzto lJhG'JWOEkL I-' claim:

11 Ima honlng'machin'e' having a pain-of roe tatable rollsstoengagethe'peripher-y: of a round work: piece'-. and a: work rest to engage andsup portgone:endiof thezworlipiece; a bladeextendingbetween: therotatable rolls; a hone in opposed relatiomtoithe blade, .mechan'ismfor.reciprocatingthe hone lengthwise of the work piece, a slide forming acommon: support for said mechanism ands said blade; andmeans: for:shiftihg the slide toiwithdraw. the-hone from the work and advance theblade? across the work: rest towexpel alfi'nish'ed- 2: In a;..h0ningmachineihaying' a: pairtotro tatable rolls to: engagewthe periphery of asrounrl work piece and a work rest toren'gage andisuppont one. ends ofthe: work: piece, a 7 blade: extendingrbetween themotatable 11011833;hone in "opposed relax tion tothe blade; mechanism= ion-reciprocatingthe: honelengthwise of the work: piece; a: slidefonming a.common supportfor said mechanism and said blade, means for shifting the sli'd'e towithdraw: thehone from the work .and expel-a finished piece from-the;work rest; a hollo wrload ing-block'togulde a column-of worl plecesinline with the workrest; andmeans actuated-by the slide for releasing anew work piece from the lbadingblockz 3; In a honing machinehavi'ng apair-of rotatable rolls to engagethe periphery of-a round' work-pieceand a work rest to engage and support one end of thework piece,- a bladeextending between: the rotatable rolls, a honeon the opposite side ofthe work rest from the -blade',-ahollow loading block to guide a column-0f work pieces-in line with the'work rest; mechanism for reciprocatingthe hcnelengthwise of the; workpiece; a detent for supporting'asupply-ofwork pieces" in the loading block, a common. support for saidreciprocating mechanism and said -blade, means for shifting the commonsupport to withdraw the hone fromthe---worl:- and' advance the bladebetween.- the work restand" loading 4 block, and means carried by saidcommon support for actuating the detent to release a work pieceontossaid blade.

4: Irr a-honing machiiie-having a pair of rotatable rolls to engage theperiphery of a round work piece and a work rest to engage and supportonegende of the work piece, a blade extending between the rotatablerolls, .a hone in opposed relation to the blade, mechanism forretracting the hone: fromi thework and advancing the blade across" thework rest, a hollow loading block to g uidaacolunmgof, work pieces inline with the work rest, a pair of spaced spring members for guidingawork piece from the loading block to the work rest, said springsnormally being spaced apart: an distance; 1555i thanz the: diameter; of?a work; piece: and adapted to: be=spread= apart. when; the,- bladesexpo-ls: a finished; work piece, from the worhzresiz.

a In": as honing machine: having; a: pain-of: ro; tatablea rolls; to"engage; the;--periphery; of: a: round: workpiece andiazworkcrestctoiengagezandasupport oneaendliOffllhel workpiece; ahollowsloadina blockto: guide: a columm ofi work: pieces; in; line with the-workirest;v a.pa'irlroiyspringzmembers for-"gum:- ing: a work piece;- from: theloading blocks, to; the wonkarest; .saidaspringmembers-beingoffsetlfrom, the; center of: the: loading. block andi having theirterminal;portionszclosen'together thanthe; diam? eter of: 33 work piecesto: urgerw work piece into, contact withrthezrotatable.110115;, ablades. and means ior projecting; the; blade across the. work rest:tozexpel a. work piece; between the: spring members, a

6. In a;honing:machine;hayingaalpain ei-rotataable rolls to engage: theperiphery of; a; round work. piece: and; a.- work; rest t0 engage: and:support-one: end at the workpieceaaqhollow-loading block to guide acolumn of work pieces imp-line, with: the! work" .rest at pair of springmembers offset from the center of the loading blockandextendingtowardsathe work're'sn.thersides ofi the I loading blockhavingzslitseto;receiyeintermediate portions-10f the =.spring:membe'rs;-and theiterminal portions: of the spring members. being closerto,-gether than the diameter ofazworkxpiece tore:- tain the -latter incontaet:with therotatableirolls.

7-. I11 aalioning machine havingra: painofrotataable rolle to engage theperiphery of a round worl'e piece and a workrest-to engage and sup portoner-end of the work piece, a: hollow loading block to guide a column ofWork pieces in line with the work rest; and a pair of spaced springmembers'for-guidinga wonk-piece from the loadting block to the work'rest; said: spring members bein'g ofiset' from' thecenter-of the loadingblock: and-being cl'osertogether'than the diameter of a 'worlc'piece tourge the-work piecetowards the driven rolls;

8; In a honing machine having a pain-of rotata able rolls' to engage theperiphery of a round work -pierce-and awork rest to engageand supportoneend-ofthe work piece; a hollow loading block in line-with-=theworkrest to guide: a column of work pieces thereto; a'blade adapted to beadvanced-between the 'loadin'g block and the work rest'to expel a workpiece from the rest; a reciprocating slide 'for advancing and retractingtheblade, a detention supportingwork pieces m--the loading blockg meansactuated by' advance of -the bladeforreleasing the: detent to d-ropawork piece onto the blade, and a spring' f'on moving the detent'to-liol'ding position: asthe bl'ade is retractedi-to release,- theworkpiece onto the; rest;

9% In ac-honingmachine having:a'pair: of rotatable rolls to engage theperiphery of around workpiece and a work rest to engage and support oneend of the Work piece, ahollow loading block in line with the work restto guide a work piece thereto, a hone, mechanism for recipro-" catingthe hone lengthwise of the work piece, a slide supporting saidmechanism, a springpressed detent for holding work pieces in the loadingblock, and means for shifting the slide to retract the hone from thework, expel a finished work piece and move the detent from holdingposition to release a new work piece from the loading block.

10. In a honing machine having means to support and rotate a round workpiece on its axis, a hone, a pair of hone mounting members connectedtogether for relative rocking movement, one member having a pair ofprojecting cheeks embracing a portion of the other member to, preventlateral movement, the cheeks having angular recesses, the other memberhaving projections with edges to seat in the recesses, the

sides of each recess defining a larger angle than V the sides of theprojections, a spring connecting the members together to hold theprojections and recesses in seated relation, means for clamping the honeto one of the members, and reciprocating mechanism connected to theother member to actuate the hone along the work piece.

11. In a honing machine having means to support and rotate a round workpiece on its axis, a hone, a pair of relatively rockable members, onemember having a pair of recesses and the other member having a pair ofprojections to seat in the recesses and rock therein, a springconnecting the members together to hold the projections and recesses inseated relation, means for clamping the hone to one of the members, andmechanism for reciprocating the other member in a direction to traversethe hone lengthwise of the work piece.

12. In a honing machine having means to support and rotate a round workpiece on its axis, a pair of relatively rockable members, one memberhaving a recess and the other member having a projection to seat in therecess and rock therein, a spring connecting the members together tohold the projection seated in the recess, a hone, means for clamping thehone to one of the members, mechanism for reciprocating the other memberin a direction to traverse the hone lengthwise of the workpiece, andmeans for preventing relative movement of the members laterally of thework piece.

13. In a honing machine having a'pair of driven rolls rotatable in ahorizontal plane, a work rest and a work loading block in verticalalignment with each other and offset to one side of the plane of theroll axes, means for feeding round work pieces in succession from theloading block to the work rest, a hone, mechanism for reciprocating thehone lengthwise of the work, and a slide carrying said mechanism forcausing the hone to press against the work and urg it into rotatingcontact with the driven rolls.

14. In a honing machine having a pair of driven rolls, a work rest and awork loading block in alignment with each other and ofiset to one sideof the line of roll centers, means for feeding round work pieces insuccession from the loading block to the work rest, a hone, a mechanismfor reciprocating the hone lengthwise of the work, and means forpressing the hone against the work to hold the work in rotating contactwith the driven rolls.

15. In a honing machine having a pair of driven rolls, a work rest and a'work loading block in alignment with each other and ofiset to one sideof the line of roll centers, means for feeding round work pieces insuccession from the loading block to the work rest, a hone, mechanismfor reciprocating the hone lengthwise of the work, said mechanismincluding a rockable mounting for the hone to provide for selfconformingcontact of the hone with the work,

and means for pressing the hone against the,

work.

16. In a honing machine having a pair of driven rolls, a work rest and awork loading block in alignment with each other and offset to one sideof the line of roll centers, means ford feeding round work pieces insuccession from the loading block to the work rest, a hone, mechanismfor reciprocating the hone length- Wise of the work, a slide carryingsaid mechanism for moving the hone towards or from the work, and a bladeconnected to the slide and actuated thereby to project the blade betweenthe driven rolls and across the work rest.

FRANKLYN P. HEGEMAN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,085,863 Hess Feb. 3, 19141,531,043 Strong Mar. 24, 1925 1,892,364 Raule Dec. 2'7, 1932 2,354,347Peets July 25, 1944 2,433,455 Hutchinson Dec. 30, 1947

